benedict fills stadium but always a book worm. more comfortable writing. many now calling for more dynamic pope. thanks inform the first papal retirement in 6 century. cardinal might be willing to choose a younger successor. >> cardinal have to weigh experience. and the need for a certain level of energy. >> tonight what looks like a divine sign. lightning. st. peter's cathedral. >> benedict won't choose successor but hand pick cardinal who will. they expect to have the act might have been his final one for the pope. this is abc news reporting from vatican city back to you. >> okay nick thanks very much. as mentioned the pope apologized to the victim of sexual abuse at the hands of the church. but as lee ann explains he will also be remembered for what he did not do. >> in 2010 during a visit to westminster abby in england the pope offered one of many apologies to the victim of sexual abuse. >> i express my deep sorrow to the innocent victims of this despicable crime also the first pope to meet with victims. but for some of them his actions came too late.